common.sh: move remove_quotes to single user

This is only used by cros_show_stacks code, so move it there.  The
common.sh script is loaded by a lot of tools in different repos,
so lets strip it down to untangle it.

BUG=None
TEST=CQ passes

Change-Id: I3b687e688295f741a8bc4ed4f2571fdd198f38e0
Reviewed-on: https://chromium-review.googlesource.com/1759160
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Alex Klein <saklein@chromium.org>
2 files changed